org.xmlunit.diff.DifferenceEngine Maven / Gradle / Ivy
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(the "License"); you may not use this file except in compliance with
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*/
package org.xmlunit.diff;
import java.util.Map;
import javax.xml.transform.Source;
import org.w3c.dom.Attr;
import org.w3c.dom.Node;
import org.xmlunit.util.Predicate;
/**
* XMLUnit's difference engine.
*/
public interface DifferenceEngine {
/**
* Registers a listener that is notified of each comparison.
*/
void addComparisonListener(ComparisonListener l);
/**
* Registers a listener that is notified of each comparison with
* outcome {@link ComparisonResult#EQUAL}.
*/
void addMatchListener(ComparisonListener l);
/**
* Registers a listener that is notified of each comparison with
* outcome other than {@link ComparisonResult#EQUAL}.
*/
void addDifferenceListener(ComparisonListener l);
/**
* Sets the strategy for selecting nodes to compare.
*/
void setNodeMatcher(NodeMatcher n);
/**
* Sets the optional strategy that decides which attributes to
* consider and which to ignore during comparison.
*
* Only attributes for which the predicate returns true are
* part of the comparison. By default all attributes are
* considered.
*
* The "special" namespace, namespace-location and
* schema-instance-type attributes can not be ignored this way.
* If you want to suppress comparison of them you'll need to
* implement {@link DifferenceEvaluator}.
*/
void setAttributeFilter(Predicate attributeFilter);
/**
* Sets the optional strategy that decides which nodes to
* consider and which to ignore during comparison.
*
* Only nodes for which the predicate returns true are part of
* the comparison. By default nodes that are not document types
* are considered.
*/
void setNodeFilter(Predicate nodeFilter);
/**
* Evaluates the severity of a difference.
*/
void setDifferenceEvaluator(DifferenceEvaluator e);
/**
* Determines whether the comparison should stop after given
* difference has been found.
*/
void setComparisonController(ComparisonController c);
/**
* Establish a namespace context that will be used in {@link
* Comparison.Detail#getXPath Comparison.Detail#getXPath}.
*
* Without a namespace context (or with an empty context) the
* XPath expressions will only use local names for elements and
* attributes.
*
* @param prefix2Uri maps from prefix to namespace URI.
*/
void setNamespaceContext(Map prefix2Uri);
/**
* Compares two pieces of XML and invokes the registered listeners.
*/
void compare(Source control, Source test);
}